Kyle and Lou of Tetra Tech came by today with their highly tricked out hydrographic survey vessel. It runs two 7125 Reson Sea Bat multibeam sonars, RTK-DGPS and a POSMV INS system. It all comes together on Hypak hydrographic software.
The vessel not only can run dual multibeam sonars but can be set up to run LIDAR as well to map surfaces direcly above the water line such as sea walls, bridge abutments, dam walls and the like.
I’ve seen some of their data. I dont know of any other inshore spread that can boast this capability.
The Tetra Tech crew kindly took three of us SeaViews out on our local Portage Lake for a demo. Steaming at about 3knts they had half the lake surveyed in no time. Very cool!